How many ways can you make 25 with only prime numbers?

Answer 1

41.

The prime numbers which are less than 25 are 2, 3, 5, 7, 11, 13, 17, 19 and 23.

1. 2 + 23 Using two numbers
2. 3 + 3 + 19 Using three numbers
3. 3 + 5 + 17
4. 3 + 11 + 11
5. 5 + 7 + 13
6. 7 + 7 + 11
7. 2 + 2 + 2 + 19 Using four numbers
8. 2 + 3 + 3 + 17
9. 2 + 3 + 7 + 13
10. 2 + 5 + 5 + 13
11. 2 + 5 + 7 + 11
12. 2 + 2 + 2 + 2 + 17 Using five numbers
13. 2 + 2 + 3 + 5 + 13
14. 2 + 2 + 3 + 7 + 11
15. 2 + 2 + 5 + 5 + 11
16. 2 + 2 + 7 + 7 + 7
17. 3 + 3 + 3 + 3 + 13
18. 3 + 3 + 3 + 5 + 11
19. 3 + 3 + 5 + 7 + 7
20. 3 + 5 + 5 + 5 + 7
21. 5 + 5 + 5 + 5 + 5
22. 2 + 2 + 2 + 3 + 3 + 13 Using six numbers
23. 2 + 2 + 2 + 3 + 5 + 11
24. 2 + 2 + 2 + 5 + 7 + 7
25. 2 + 3 + 3 + 3 + 3 + 11
26. 2 + 3 + 3 + 3 + 7 + 7
27. 2 + 3 + 3 + 5 + 5 + 7
28. 2 + 3 + 5 + 5 + 5 + 5
29. 3 + 3 + 3 + 3 + 3 + 5 + 5 Using seven numbers
30. 2 + 2 + 2 + 2 + 2 + 2 + 2 + 11 Using eight numbers
31. 2 + 2 + 2 + 3 + 3 + 3 + 3 + 7
32. 2 + 3 + 3 + 3 + 3 + 3 + 3 + 5
33. 2 + 2 + 2 + 2 + 2 + 2 + 3 + 3 + 7 Using nine numbers
34. 2 + 2 + 2 + 2 + 3 + 3 + 3 + 3 + 5
35. 2 + 2 + 3 + 3 + 3 + 3 + 3 + 3 + 3
36. 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 7 Using ten numbers
37. 2 + 2 + 2 + 2 + 2 + 2 + 2 + 3 + 3 + 5
38. 2 + 2 + 2 + 2 + 2 + 3 + 3 + 3 + 3 + 3
39. 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 5 Using eleven numbers
40. 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 3 + 3 + 3
41. 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 3 Using twelve numbers